i 2nd the DDWRT. I use bt infinity with the Dlink 615 with DDWRT its perfection other than the wifi being a bit weak but i am waiting for the wireless AC standard to come out before i spend money on a new router. I dont think you need a draytek. The BT modem has been rock solid for me no problems its the shit home hub thats the problem.
Dont knock the router for being £10.00. Pics of gui on the thread below.
http://www.world-of-satellite.com/sh...529#post125529